I keep getting the pop up with malicious url blocked after visiting a certain website. Now it just comes up every 30 seconds even when I am not online, I did a scan but still nothing. Must have a virus on my laptop. Anyone one have suggestions about how to clean the virus off laptop? 
follow the guide and attach logs. http://forum.avast.com/index.php?topic=53253.0
AdwCleaner
Malwarebytes
OTL
aswMBR